@inproceedings{PPDP-2018-SakanashiS,
	author        = "Genki Sakanashi and Masahiko Sakai",
	booktitle     = "{Proceedings of the 20th International Symposium on Principles and Practice of Declarative Programming}",
	doi           = "10.1145/3236950.3236963",
	pages         = "13",
	publisher     = "{ACM}",
	title         = "{Transformation of Combinatorial Optimization Problems Written in Extended SQL into Constraint Problems}",
	year          = 2018,
}